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Finding the Fourth Proportional to 496.15, 744.48 and 331.74

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Solution

The fourth proportional to 496.15, 744.48 and 331.74 is: 497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.15 : 744.48 = 331.74 : x
  2. Step 2: Convert to fraction form
    496.15/744.48 = 331.74/x
  3. Step 3: Cross multiply
    496.15x = 744.48 × 331.74
  4. Step 4: Simplify right side
    496.15x = 246,973.80
  5. Step 5: Solve for x
    x = 246,973.80/496.15
  6. Step 6: Final answer
    x = 497.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.